I searched the forums and couldn't find anybody else with this exact same issue, so I'm creating this post in hopes someone has seen it before and knows how to fix it. I have a 2010 MP3 500. I live in Irvine,CA. It started right at the time of my 1st service, 626 miles on the odometer. After sitting for a day in my covered garage, it just stated beeping. A neighbor dropped by and said "Hey, I think your scooter just flat-lined." I go out and can hear the tilt lock beeping constantly. I figure someone tried to steal it and it was just the theft alarm. A quick run through the manual and I realize these don't have a factory theft alarm. The only way to make the beeping stop is to turn the ignition key on or disconnect the battery. It runs and rides totally fine. Nothing wrong with the tilt lock at all. But when you remove the key... after bout 10 seconds it starts beeping constantly.
Here is a video of the issue: http://youtu.be/Yeygz1MsTPc
I took it into a local Vespa shop for an oil change and they said they don't know what the issue is. The owner called around and said the guys at a Piaggio Dealer about 6 hours away have heard of it happening before and it has to do with some bushing or something up front. Says it wasn't installed properly at the factory. The dealer I bought it from is about a 2 hour drive away and speaking to them over the phone, they never heard of the issue. So I'm hesitant to drop it off with them and have it sit for weeks while they try to figure it out. I'd rather drop it off with some info on exactly what is wrong. So if there are any genius tinkerers on this board that might help, it would be much appreciated. Any procedures I can try to fix it myself would also be worth a try before making this 2 hour ride to the dealer.